.clearfix::after{
    content: "";
    display:block;
    clear:both;
}

body{
    background: url("../images/reader_login.jpg") no-repeat ;
    background-attachment: fixed;
    background-size: cover;
    margin: 0;
    min-height: 100%;
}

.main{
    width:100%;
}

.header{
    position: fixed;
    background: #000000;
    left: 0;
    top: 0;
    height: 27px;
    line-height: 27px;
    width: 100%;
    min-width: 600px;
}

.header i{
    float: left;
    color : #fff;
    font-size:23px;
    margin-left:10px;
    line-height: 27px;
}

.content{
    position: relative;
    text-align: center;
    height: 95vh;
    /* width: 683px; */
    /* width: 36%; */
    width: 70%;
    left: 0;
	right: 0;
	margin: auto;
}

.content #photo{
    position: absolute;
    background: #fff;
    width: 14em; 
	top: 25%;
	left: -50%;
	right: 5%;
	margin: auto;
}

.content #photo i{
    font-size: 1350%;
    
}

.content .login{
    position: absolute;
    /* bottom: 15%; */
    top:24%;
    right:20%;
    margin: auto;
    font-size: 17px;
} 

.content .login i{
    font-style: normal;
}

.content .login .password i{
    margin-left: -8%;
}

.content .login p{
    display: inline-block;
}
.content .login input{
    width: 20em;
    height: 2em;
    display: inline;
}

.content .register{
    margin: 1em auto;
}

.content button{
    width: 6em;
    height: 2em;
    background: #000;
    color: #fff;
    border: none;
    cursor: pointer;
    /*margin-top: 1em;*/
}

.content button:hover{
    background: #7f7f7f;
}

.footer{
    width: 100%;
    background-color: black;
    margin-top: 23%;
    position:fixed;
    bottom: 0;
    left:0;
    height: 100px;
}

.footer .mandarin{
    position: absolute;
    width: 250px;
    height: 90px;
    border-radius: 50%;
    overflow: hidden;
    left:50px;
    top: 5px;
}

.footer .mandarin img{
    position: absolute;
    width: 100%;
    height: 100px;
    left: 50%;
    top:50%;
    transform: translate(-50%,-50%);
}

.footer p{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    color: #7f7f7f;
}

.tanchuceng{
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    background:rgba(0,0,0,0.5);
    z-index: 1;
    display: none;
}

.tanchuceng .msg{
    position: absolute;
    left: 50%;
    top:50%;
    transform: translate(-50%,-50%);
    width: 400px;
    height: 200px;
    background: linear-gradient(90deg,#f6e58d,#f9ca24,#ffbe76,#f0932b);
}

.tanchuceng .msg .exit{
    background: #f6e58d;
    color: black;
    position: absolute;
    right: -6px;
    top:-10px;
    border-radius: 50%;
    width: 20px;
    text-align: center;
    line-height: 20px;
    height: 20px;
    cursor: pointer;
}

.tanchuceng .msg p{
    text-align: center;
    line-height: 200px;
    margin: 0;
}